@@ -31,3 +31,85 @@ TEST(FixedSizeQueue, Simple)

EXPECT_EQ(0u, q.size());
}

TEST(FixedSizeQueue, RingBuffer)
{
// Testing if queue works when used as a ring buffer
FixedSizeQueue<int, 5> q;

EXPECT_EQ(0u, q.size());

q.push(0);
q.push(1);
q.push(2);
q.push(3);
q.push(4);
q.push(5);

EXPECT_EQ(5u, q.size());
EXPECT_EQ(1, q.pop_front());

EXPECT_EQ(4u, q.size());
}

// Local classes cannot have static fields,
// therefore this has to be declared in global scope.
class NonTrivialTypeTestData
{
public:
static inline int num_objects = 0;
static inline int total_constructed = 0;
static inline int default_constructed = 0;
static inline int total_destructed = 0;

NonTrivialTypeTestData()
{
num_objects++;
total_constructed++;
default_constructed++;
}

NonTrivialTypeTestData(int /*val*/)
{
num_objects++;
total_constructed++;
}

~NonTrivialTypeTestData()
{
num_objects--;
total_destructed++;
}
};

TEST(FixedSizeQueue, NonTrivialTypes)
{
// Testing if construction/destruction of non-trivial types happens as expected
FixedSizeQueue<NonTrivialTypeTestData, 2> q;

EXPECT_EQ(0u, q.size());

EXPECT_EQ(2, NonTrivialTypeTestData::num_objects);
EXPECT_EQ(2, NonTrivialTypeTestData::total_constructed);
EXPECT_EQ(2, NonTrivialTypeTestData::default_constructed);
EXPECT_EQ(0, NonTrivialTypeTestData::total_destructed);

q.emplace(4);
q.emplace(6);
q.emplace(8);

EXPECT_EQ(2, NonTrivialTypeTestData::num_objects);
EXPECT_EQ(2 + 3, NonTrivialTypeTestData::total_constructed);
EXPECT_EQ(2, NonTrivialTypeTestData::default_constructed);
EXPECT_EQ(3, NonTrivialTypeTestData::total_destructed);
EXPECT_EQ(2u, q.size());

q.pop();
q.pop();

EXPECT_EQ(2, NonTrivialTypeTestData::num_objects);
EXPECT_EQ(2 + 3 + 2, NonTrivialTypeTestData::total_constructed);
EXPECT_EQ(2 + 2, NonTrivialTypeTestData::default_constructed);
EXPECT_EQ(3 + 2, NonTrivialTypeTestData::total_destructed);
EXPECT_EQ(0u, q.size());
}